package com.e.buy.tools;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Servlet Filter implementation class UrlFilter
 */
public class UrlFilter implements Filter {

    /**
     * Default constructor. 
     */
    public UrlFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	@Override
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest resq = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		String currentURL = resq.getRequestURI();
		String targetURL = resq.getServletPath();
		HttpSession session = resq.getSession();
		
		//是Admin的后台操作请求
		if(targetURL.endsWith(".adm") || targetURL.equals("/adminFrame.form")) {
			if ((session == null) || (session.getAttribute("loginAdmin") == null)){
				resp.sendRedirect("/" + currentURL.split("/")[1] +"/index.form");
				return;
			} 
		}
		chain.doFilter(request, response);
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	@Override
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
